Pump.



PATENTED SEPT. 12, 1905.

P. B. ALLEN.

PUMP.

uPLloATIoN funn Dnc. x5, 1904.

2 SHEETS-sum' 1.

PATENTED SEPT. I2, 1905.

F. B. ALLEN PUMP.

APPLICATION FILED DEQ-15, 1904` 2 SHEETS-SHEET 2` MHz/@55135.A

EEANK B. ALLEN, or""'s.fii.'i'i.Ai E crrr, UTAH.

PU IVI F.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed December l5, 1904. Serial No. 236,966.

To (tl/.7. wtout ntfty/ concern.'

Beit known that I, FRANK B. ALLEN, a citi- Zen of theUnit-ed States. residing at Salt Lake City, in the county of Salt Lake, State of Utah, have invented certain new and usefullmprovements in Pumps, ot' which the following is a description, reference being had to the accompanying drawings and to the figures of reference marked thereon.

This invention relates to pumps, and has for its principal object to provide a device which may be operated with minimum power and which will discharge water continuously when in operation.

A further object otl the invention is to provide a novel form of water-balanced pump in which two connected columns of water are reciprocated alternately in opposite directions, a volume ot' water being' added to and discharged from each column at each reciprocation.

lith these and other objects in view, as will appear when the nature ot' the invention is more fully disclosed, the invention cons ists in the novel construction and arrangement of parts hereinafter described, illustrated in the accompanying drawings,and more i'ully pointed out in the appended claims.

In the accompanying' drawings, Figure 1 is a Vertical sectional view of a water-balanced pump constructed in accordance with the invention. Fig. 2 is a similar view ot' a portion ot' the same on an enlarged scale. Fig. 3 is a sectional view of one otl the smaller-pistons. Fig. t is a sectional plan view on the line 4 et of Fig. 2.

Similar numerals of reference denote corresponding parts throughout the several figures ot' the drawings.

The base 10 is hollow and forms a passage between the two circulating-pipes 11 11, which have a threaded connection therewith, or the parts may be provided with bolting-tlanges, as desired. Each pipe is preferably formed in two sections 12 13, connected by an intermediate casing-14, which is usually formed otl cast metal.

The casing 14 is provided with an inner cylinder 15, concentric with the wall of the casing and held in place by an inwardly-extending tubular portion 16, which forms a waterinlet and is connected to the supply-pipe 17. To the upper portion of the cylinder l5 is :screwed or otherwise secured the lower end ot' a pumping-cylinder 18, which has an open upper end, and this cylinder may for convenience be formed of a short length ot' pipe ot' appropriate diameter. r1`he pumping-cylinder is concentric with the tube-section 12, and a clear annular water-space is iormed between the two. At the top ot' the cylinder 15 a seat is formed for the reception ot' a water-inlet valve 19, which will open to admit water, but will close to prevent the escape ot' any water from the pumping-cylinder.

In the pumping-cylinder is a piston or plunger 20, having a valve-seat tor an upwardlyopening valve 2l, and said piston carries a valve-cage 22 ot' the usual type to limit opening movement ot' said valve.

1n the lower section 12 otl the tube 11 is a piston or plunger 22, having a small leakageopening 23 'for the passage oi' water.

The upper plunger 2() is secured to a rod 24E, and to the latter is keyed or bolted a crossbar 25, that is connected by two or more bars or rods 26 to a second bar 2T. The cross-bar 27 is secured to the piston 22/ by a bolt 28, so that both pistons work simultaneously as the main rod 24 is reciprocated.

The two rods 24 extend out through the upper ends ot' the circulating-pipes 1l 11/ and are connected for mutual movement to an operating-lever 30, pivoted to a standard 31, that is located midway between the two rods. The level' may be operated manually or by power, and at each movement one rod is elevated and the other depressed.

The operation ot' the pump is as follows: The two pistons of the pipe 11 have Ijust ceased their upward movement and the corres onding pistons ot' the pipe 11 have ceased t ownward movement. On the upstroke of piston 2O the valve 19 was raised and water iownfl into the lei't cylinder 18. Then the movement is reversed and the left pistons move down, the valve 2l opens and the piston 20 passes down, leaving the water above the piston. At the same time upward movement ot' the right-hand piston 20 causes water to How into the cylinder under atmospheric pressure, A second upstroke ot' the lett-hand pistons closes valve 21 and the water in the cylinder iiows over the top thereof and falls through the annular space outside the cylinder, being caught by the lower piston 22. This movement continues and water gradually leaks through the two passages 23 until the connecting-passage in the base is iilled and the water-level reaches the tops ot' the two tubes 1l 11 or discharge-spouts 34:, near the top thereof. Having now acquired two connected columns ot water of equal height, further IOO IIO

J i w movement will in each instancev result in the lowering of one column and the raising of the other, the quantity of water discharged at each movement being equal to the volume added at each movement, or, in other words, the volume of one of the cylinders 18. The connected columns balance each other, and the movement will therefore be uniform and the discharge practically continuous, while the pump may be operated with a minimum expenditure of l energy.

Having thus described my said invention, what I claim, and desire to secure by Letters Patent, is-

l. In a pump, a pair of tubes connected togetherat their lower ends, pumping-cylinders on the tubes, water-inlets leading to the cylinders and mechanically connected, pistons disposed in the tubes and cylinders and movable to effect upward movement of the columns of water alternately in said tubes, substantially as described.

2. In a pump, a pair of connected tubes having top discharges, pistons in said tubes, means for moving said pistons in opposite directions respectively, thereby to cause the connected columns of fluid to reciprocate, and means for adding to each tube a volume of fluid and for discharging an equal volume at each reciprocation. A

3. In a pump, a pair of tubes connected at their lower ends, pistons in said tubes, pumping-cylinders within the tubes, pistons in said cylinders, the upper ends of the cylinders communicating with the tubes, a water-inlet for each cylinder, and means for connecting all of the pistons for mutual movement.

base, a pair of sectional tubes having their lower ends connected thereto, a casing interposed between the sections of each tube, a pumping-cylinder carried by the casing and arranged concentrically with the tube, a suction inlet-valve in the cylinder, a` perforated piston in the lower section of each tube, a valved piston in each pumping-cylinder, an operating-rod for each pumping-piston, means for connecting each pumping-piston to the piston of its encircling tube, and a pivoted lever connecting' the rods for mutual movement in opposite directions respectively.

6. In a pump, apair of concentric cylinders, a discharge-pipe leading from the outer cylinder, a fluid-inlet leading to one end of the inner cylinder and the opposite end of said cylinder being' in free communication with the outer cylinder, and a pair of connected pistons one in each of said cylinders.

In testimony whereof I afliX my signature in presence of two witnesses.

FRANK B. ALLEN. Witnesses:

JAMES THOMSON, NELLIE KIRK. 

